The
Effects of Smoking on Blood Alcohol
Information
courtesy of Lawrence Taylor - DUIblog
I
have mentioned in numerous posts that a primary problem with blood
alcohol analysis is that the no two individuals are alike in their
physiology and metabolism of alcohol (see, for example, "Convicting
the Average Person", "Racial Differences in the Metabolism
of Alcohol" and "High Blood Alcohol -- or a Zinc Deficiency?").
Further, many external factors can influence attempts to measure
blood alcohol levels (see, for example, "Under the Influence
of....Gasoline?", "Asthma Inhalers Can Cause High Breathalyzer
Results" and "Driving Under the Influence of....Paint?").
One
of many other factors that render attempts to estimate an individual's
blood alcohol concentration at a given point in time is smoking.
A scientific
study has found that cigarette smoking can influence absorption
by the body of alcohol -- and thus, among other things, attempts
to estimate earlier blood alcohol levels when driving based upon
tested levels. Johnson et al., "Cigarette Smoking and Rate
of Gastric Emptying: Effect on Alcohol Absorption", 302 British
Medical Journal 20 (1991).
The
researchers reported testing blood samples of a group of smokers
for blood alcohol levels both after smoking and after prolonged
abstinence. The result was that "areas under the venous blood
alcohol concentration-time curves between zero and 30 minutes and
60 minutes and the peak blood alcohol concentrations were significantly
less during the smoking period compared with the non-smoking period".
Gastric emptying was also found to be slower during the smoking
evaluation.
The
scientists concluded that the effect of smoking on alcohol absorption
has "considerable social and medicolegal relevance", and
that the ingestion of nicotine should be taken into when dealing
with alcohol metabolism.
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